From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Higher compression cylinder heads for the Bentley, concluding a 7:1 ratio is the limit.
| Identifier | ExFiles\Box 86\1\ scan0061 | |
| Date | 15th May 1934 | |
| X219 EXPERIMENTAL DEPARTMENT REPORT REFERENCE :- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}3/MA.15.5.34. Subject of Report :- Higher Compression Cylinder Heads for the Bentley. General Conclusions :- 7:1 is the limiting ratio under the existing conditions for a closed Bentley Car. Copies of Report Circulated to :- Sg.{Arthur F. Sidgreaves - MD}, Wor.{Arthur Wormald - General Works Manager}, E.{Mr Elliott - Chief Engineer}, By.{R.W. Bailey - Chief Engineer}, Da.{Bernard Day - Chassis Design}, Bn.{W.O. Bentley / Mr Barrington}, Ev.{Ivan Evernden - coachwork} Report to be noted for further action by :- Sales & Design. Test carried out on :- Test Bed. By :- R.Matthews. Test No. Date :- | ||